Si
 1.0000000000000000
     0.0000000000000000    1.9487412862926401    1.9487412862926401
     1.9487412862926401    0.0000000000000000    1.9487412862926401
     1.9487412862926401    1.9487412862926401    0.0000000000000000
 Si 
   1
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000